Definition & Meaning of "party horn"

What is a "party horn"?

A party horn is a festive toy that makes a loud, buzzing sound when blown into. It is typically made from colorful paper or plastic and is rolled into a cone shape. When air is blown through the horn, a small coil inside unrolls, producing a sound that is often used during celebrations, such as birthdays or New Year's Eve. Party horns are often brightly decorated adding to the festive atmosphere. They are popular for their simple, fun noise and are a common accessory for parties and celebrations.